When MPNZ's load shedding percentage exceeds 75%, the bar on the graph should move into a red zone. It signals the USI transmission grid is approaching peak loading and as MPNZ's load shedding percentage approaches 100% there is a reasonable likelihood of new chargeable peak periods occurring.

When the end of the bar is red MPNZ is deploying its maximum load control capability (100%). The longer MPNZ load shedding remains at 100% the more likely new chargeable peak periods will occur on the USI grid. This forms a reasonable signal for consumers to manage their load and to continue doing so until the bar on graph moves down from 100% and ceases to be red at the end.

When the whole bar is white (0%) MPNZ is not controlling any load and the grid will be operating at normal load levels. This bar is updated every 5 minutes.

2. Get written confirmation from your doctor or healthcare professional outlining the equipment you have at home.

3. Send both the form and the confirmation to MainPower as soon as possible.

When we have this information, we will know that power outages would present a threat to your health or wellbeing.

Make sure you have a backup plan

We can never guarantee your power supply at all times, as temporary outages can occur. We urge you to have a clear emergency response plan. This could include always having a standby battery that is fully charged and ready to use. It could also include plans to immediately relocate to another address which has electricity supply.